In the article "Determination of VIT 45 (IND#63,243 - American Regent) removal by closed loop in vitro hemodialysis system" by Manley HJ and McClaran ML, published in Int J Artif Organs 2006; 29 (11): 1062-6, the authors did not intend to publish the IND (investigational new drug) number along with the name of the company sponsor and would wish to retract this information in the article.